.stack-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .stack-card {
            background: var(--bg-card);
            border: 1px solid var(--border-glow);
            border-radius: 0;
            padding: 1.5rem;
            transition: border-color 0.2s;
        }
        .stack-card:hover {
            border-color: var(--primary-green);
        }
        .stack-card h3 {
            color: var(--primary-green);
            font-family: 'Orbitron', sans-serif;
            font-size: 0.9rem;
            margin-bottom: 0.5rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .stack-card .version {
            color: var(--neon-cyan);
            font-size: 0.75rem;
            padding: 0.15rem 0.5rem;
            background: rgba(0, 255, 255, 0.1);
            border-radius: 0;
            font-family: 'JetBrains Mono', monospace;
        }
        .stack-card p {
            color: var(--text-secondary);
            font-size: 0.85rem;
            line-height: 1.6;
        }
        .architecture-diagram {
            background: rgba(0, 20, 10, 0.6);
            border: 1px solid var(--border-glow);
            border-radius: 0;
            padding: 2rem;
            margin: 2rem 0;
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.8rem;
            overflow-x: auto;
        }
        .architecture-diagram pre {
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0;
        }
        .architecture-diagram .highlight {
            color: var(--primary-green);
            font-weight: 600;
        }
        .architecture-diagram .cyan {
            color: var(--neon-cyan);
        }
        .architecture-diagram .purple {
            color: var(--accent-purple);
        }
        .architecture-diagram .orange {
            color: var(--warning-orange);
        }
        .metric-bar {
            display: flex;
            align-items: center;
            gap: 1rem;
            margin: 0.5rem 0;
        }
        .metric-bar .label {
            color: var(--text-secondary);
            font-size: 0.8rem;
            min-width: 140px;
        }
        .metric-bar .bar {
            flex: 1;
            height: 6px;
            background: rgba(0, 255, 65, 0.1);
            border-radius: 0;
            overflow: hidden;
        }
        .metric-bar .bar-fill {
            height: 100%;
            border-radius: 0;
            transition: width 1s ease;
        }
        .metric-bar .value {
            color: var(--neon-cyan);
            font-size: 0.8rem;
            min-width: 60px;
            text-align: right;
            font-family: 'JetBrains Mono', monospace;
        }
        .section-category {
            color: var(--accent-purple);
            font-family: 'Orbitron', sans-serif;
            font-size: 0.75rem;
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 0.5rem;
        }
        .code-block {
            background: rgba(0, 0, 0, 0.5);
            border: 1px solid rgba(0, 255, 65, 0.15);
            border-radius: 0;
            padding: 1rem 1.5rem;
            margin: 1rem 0;
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.8rem;
            color: var(--text-secondary);
            overflow-x: auto;
        }
        .code-block .keyword { color: var(--accent-purple); }
        .code-block .string { color: var(--primary-green); }
        .code-block .comment { color: #555; }

        /* GitOps Flow Diagram */
        .flow-diagram {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .flow-step {
            background: var(--bg-card);
            border: 1px solid var(--border-glow);
            border-radius: 0;
            padding: 1.5rem 1rem;
            text-align: center;
            position: relative;
            transition: all 0.3s ease;
            min-height: 180px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .flow-step:hover {
            border-color: var(--primary-green);
        }
        .flow-step::after {
            content: '\2192';
            position: absolute;
            right: -20px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 1.5rem;
            color: var(--primary-green);
            z-index: 10;
            text-shadow: none;
        }
        .flow-step:last-child::after { display: none; }
        .flow-icon { font-size: 2rem; margin-bottom: 0.75rem; }
        .flow-label { font-size: 0.9rem; font-weight: 600; color: var(--primary-green); margin-bottom: 0.5rem; }
        .flow-detail { font-size: 0.75rem; color: var(--text-secondary); line-height: 1.5; }
        .flow-timing {
            margin-top: 0.75rem;
            padding: 0.4rem;
            background: rgba(0, 255, 65, 0.1);
            border-radius: 0;
            font-size: 0.7rem;
            color: var(--neon-cyan);
            font-weight: 600;
        }
        @media (max-width: 768px) {
            .flow-diagram { grid-template-columns: 1fr; }
            .flow-step::after {
                content: '\2193';
                right: 50%;
                top: auto;
                bottom: -20px;
                transform: translateX(50%);
            }
            .stack-grid { grid-template-columns: 1fr; }
        }